{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:25A4DE7ISUO4VUU3VHS5ABLT3N","short_pith_number":"pith:25A4DE7I","canonical_record":{"source":{"id":"1504.01589","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T13:02:19Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"7aa3371ce6f97cbb0b0f82fae2523092ac484adc2190b5609266aef45f0a05c9","abstract_canon_sha256":"87b172e2aa85e14a6f1464dc098cfe4ac6d410cd63d0de54bc6408aebeae8f8f"},"schema_version":"1.0"},"canonical_sha256":"d741c193e8951dcad29ba9e5d00573db5da99879d8ca343243c04d7ae4a29e53","source":{"kind":"arxiv","id":"1504.01589","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01589","created_at":"2026-05-18T02:19:26Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01589v1","created_at":"2026-05-18T02:19:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01589","created_at":"2026-05-18T02:19:26Z"},{"alias_kind":"pith_short_12","alias_value":"25A4DE7ISUO4","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"25A4DE7ISUO4VUU3","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"25A4DE7I","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:25A4DE7ISUO4VUU3VHS5ABLT3N","target":"record","payload":{"canonical_record":{"source":{"id":"1504.01589","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T13:02:19Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"7aa3371ce6f97cbb0b0f82fae2523092ac484adc2190b5609266aef45f0a05c9","abstract_canon_sha256":"87b172e2aa85e14a6f1464dc098cfe4ac6d410cd63d0de54bc6408aebeae8f8f"},"schema_version":"1.0"},"canonical_sha256":"d741c193e8951dcad29ba9e5d00573db5da99879d8ca343243c04d7ae4a29e53","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:19:26.698988Z","signature_b64":"IdkygbwhsbWws8FvojGVb+C3jhXsr0CJpzBl6BHnuFWWlVJ0CrVvtbl5F5VBAcEogWuPk3Xpbg0Zm5/4kU4zDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d741c193e8951dcad29ba9e5d00573db5da99879d8ca343243c04d7ae4a29e53","last_reissued_at":"2026-05-18T02:19:26.698486Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:19:26.698486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.01589","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:19:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ULWls+dSDu9gCfcdAH/pv5fFZdY+v1I5iJr32BPsDaJgbDxp4LT65KkAVyVKxwN2YNe3nXU1WXjCqzpW/p8pDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T04:47:28.368746Z"},"content_sha256":"2999ed10d67e6bd3311f9ce05c98c1663922e16810a5b667087052d29529be8d","schema_version":"1.0","event_id":"sha256:2999ed10d67e6bd3311f9ce05c98c1663922e16810a5b667087052d29529be8d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:25A4DE7ISUO4VUU3VHS5ABLT3N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design and realization of a facility for the characterization of Silicon Avalanche PhotoDiodes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Alessandro Rizzo, Andrea Celentano, Franco Parodi, Giacomo Ottonello, Gianni Nobili, Giuseppe Mini, Irene Zonta, Luca Colaneri, Raffaella De Vita, Stuart Fegan","submitted_at":"2015-04-07T13:02:19Z","abstract_excerpt":"We present the design, construction, and performance of a facility for the characterization of Silicon Avalanche Photodiodes in the operating temperature range between -2 $^\\circ$C and 25 $^\\circ$C. The system can simultaneously measure up to 24 photo-detectors, in a completely automatic way, within one day of operations. The measured data for each sensor are: the internal gain as a function of the bias voltage and temperature, the gain variation with respect to the bias voltage, and the dark current as a function of the gain. The systematic uncertainties have been evaluated during the commiss"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01589","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:19:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fXcXzRDDEpbW5TEaFv8qNyEDgvWTI7D7MXmxFPjpUVHJA52QVxDie71BSg62Sb3QxRcy34kxdBUcgzN2zYIkCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T04:47:28.369097Z"},"content_sha256":"72ddf70de1a8411b68d5f5293321dcb9f504dced3f02a08410ff75c25d32d0d9","schema_version":"1.0","event_id":"sha256:72ddf70de1a8411b68d5f5293321dcb9f504dced3f02a08410ff75c25d32d0d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/25A4DE7ISUO4VUU3VHS5ABLT3N/bundle.json","state_url":"https://pith.science/pith/25A4DE7ISUO4VUU3VHS5ABLT3N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/25A4DE7ISUO4VUU3VHS5ABLT3N/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-28T04:47:28Z","links":{"resolver":"https://pith.science/pith/25A4DE7ISUO4VUU3VHS5ABLT3N","bundle":"https://pith.science/pith/25A4DE7ISUO4VUU3VHS5ABLT3N/bundle.json","state":"https://pith.science/pith/25A4DE7ISUO4VUU3VHS5ABLT3N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/25A4DE7ISUO4VUU3VHS5ABLT3N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:25A4DE7ISUO4VUU3VHS5ABLT3N","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"87b172e2aa85e14a6f1464dc098cfe4ac6d410cd63d0de54bc6408aebeae8f8f","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T13:02:19Z","title_canon_sha256":"7aa3371ce6f97cbb0b0f82fae2523092ac484adc2190b5609266aef45f0a05c9"},"schema_version":"1.0","source":{"id":"1504.01589","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01589","created_at":"2026-05-18T02:19:26Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01589v1","created_at":"2026-05-18T02:19:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01589","created_at":"2026-05-18T02:19:26Z"},{"alias_kind":"pith_short_12","alias_value":"25A4DE7ISUO4","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"25A4DE7ISUO4VUU3","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"25A4DE7I","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:72ddf70de1a8411b68d5f5293321dcb9f504dced3f02a08410ff75c25d32d0d9","target":"graph","created_at":"2026-05-18T02:19:26Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present the design, construction, and performance of a facility for the characterization of Silicon Avalanche Photodiodes in the operating temperature range between -2 $^\\circ$C and 25 $^\\circ$C. The system can simultaneously measure up to 24 photo-detectors, in a completely automatic way, within one day of operations. The measured data for each sensor are: the internal gain as a function of the bias voltage and temperature, the gain variation with respect to the bias voltage, and the dark current as a function of the gain. The systematic uncertainties have been evaluated during the commiss","authors_text":"Alessandro Rizzo, Andrea Celentano, Franco Parodi, Giacomo Ottonello, Gianni Nobili, Giuseppe Mini, Irene Zonta, Luca Colaneri, Raffaella De Vita, Stuart Fegan","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T13:02:19Z","title":"Design and realization of a facility for the characterization of Silicon Avalanche PhotoDiodes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01589","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:2999ed10d67e6bd3311f9ce05c98c1663922e16810a5b667087052d29529be8d","target":"record","created_at":"2026-05-18T02:19:26Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"87b172e2aa85e14a6f1464dc098cfe4ac6d410cd63d0de54bc6408aebeae8f8f","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T13:02:19Z","title_canon_sha256":"7aa3371ce6f97cbb0b0f82fae2523092ac484adc2190b5609266aef45f0a05c9"},"schema_version":"1.0","source":{"id":"1504.01589","kind":"arxiv","version":1}},"canonical_sha256":"d741c193e8951dcad29ba9e5d00573db5da99879d8ca343243c04d7ae4a29e53","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d741c193e8951dcad29ba9e5d00573db5da99879d8ca343243c04d7ae4a29e53","first_computed_at":"2026-05-18T02:19:26.698486Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:19:26.698486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IdkygbwhsbWws8FvojGVb+C3jhXsr0CJpzBl6BHnuFWWlVJ0CrVvtbl5F5VBAcEogWuPk3Xpbg0Zm5/4kU4zDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:19:26.698988Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.01589","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2999ed10d67e6bd3311f9ce05c98c1663922e16810a5b667087052d29529be8d","sha256:72ddf70de1a8411b68d5f5293321dcb9f504dced3f02a08410ff75c25d32d0d9"],"state_sha256":"e41768beee3692efa17d917e9d3a6e3972fc7b53fd9eb256e2c9698faedeb249"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lxbOboc6hUJ/24OPj4VnL2JFfftFYNNYabB3G8DWLebpEotCoQIhpVg5g+vWsqPzemC7d7vQ9uftwR3Z6ymcDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T04:47:28.371044Z","bundle_sha256":"9c0b9ceb058d5b52b0e87a61456bb56a3e5316dbc2c7b669cb91e4ede884ea45"}}